Oscilacije in vibracije v železniškem prometu

diplomska naloga

Jure Raspor (Avtor), Bogdan Zgonc (Mentor), Janko Logar (Član komisije za zagovor), Marijan Žura (Član komisije za zagovor), Darja Šemrov (Komentor)

Povzetek

Ključne besede

gradbeništvo;UNI;diplomska dela;železniški promet;oscilacije;vibracije;rebričenje tirnic;omejevanje vibracij;podplati pod pragi;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2013
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	[J. Raspor]
UDK:	656.2(043.2)
COBISS:	6448737
Št. ogledov:	3088
Št. prenosov:	598
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Oscillations and vibrations in railway traffic
Sekundarni povzetek:	The thesis treats a problem of oscillations and vibrations which take rise in railway traffic. Incipient chapters cover the basis of theory of vibration as well as describe elements presented in railway superstructure, that have a significant influence on the occurence and propagation of vibration. Thereafter the wheel-rail contact and different types of vibrational sources, due to rail and wheel irregularities, are described in greater detail. Procedure implementation of vibration measurement as well as effects of train-induced vibration are also briefly discussed. Major portion of contents is focused on mitigating measures, with a great emphasis on under-sleeper pads. Based on the simple dynamic model of a train-track system, displacements, velocities and accelerations, which represent approximate values of oscillations, that can be anticipated in such system, are calculated in the end. Model is designed as a single degree-of-freedom system and represents movement of a damped mass element with constant speed on a sine curved grounding. Based on the results, that are graphically represented in diagrams, one can conclude, how the values of oscillations are dependant on geometrical parameters of rail corrugations, speed of train and mass of a carriage.
Sekundarne ključne besede:	graduation thesis;civil engineering;railway traffic;oscillations;vibrations;rail corrugation;vibration mitigation;under sleeper pads;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani:	XI, 93 str.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Oscillations and vibrations in railway traffic
Ključne besede (ePrints):	železniški promet;oscilacije;vibracije;rebričenje tirnic;omejevanje vibracij;podplati pod pragi
Ključne besede (ePrints, sekundarni jezik):	railway traffic;oscillations;vibrations;rail corrugation;vibration mitigation;under sleeper pads
Povzetek (ePrints):	Diplomska naloga obravnava problem oscilacij in vibracij, ki nastajajo v železniškem prometu. V začetnih poglavjih so na kratko opisane osnove teorije vibracij ter sestavni deli zgornjega ustroja, ki pomembno vplivajo na nastanek in širjenje vibracij v okolico. V nadaljevanju je podrobno opisan stik kolesa in tirnice ter različni tipi izvorov vibracij, ki so posledica geometrijskih nepravilnosti na tirnici in kolesu. Na kratko so opisani tudi postopki izvajanja meritev vibracij ter vpliv, ki ga imajo vibracije povzročene s strani železniškega prometa na človeka. Večja pozornost je namenjena predstavitvi ukrepov za omejevanje vibracij, s posebnim poudarkom na poliuretanskih podplatih pod pragi. Na koncu so, na podlagi enostavnega dinamičnega modela sistema vlak-tir, izvedeni izračuni pomikov, hitrosti in pospeškov, ki predstavljajo okvirne vrednosti oscilacij, ki jih je mogoče pričakovati v takšnem sistemu. Uporabljen je model z eno prostostno stopnjo, ki predstavlja gibanje vzmetenega in dušenega masnega elementa s konstantno hitrostjo po podlagi sinusne oblike. Rezultati so grafično prikazani v diagramih, na podlagi katerih je mogoče sklepati, na kakšen način na vrednosti oscilacij vplivajo različne oblike rebričenih tirnic, hitrosti vlaka ter masa vagona.
Povzetek (ePrints, sekundarni jezik):	The thesis treats a problem of oscillations and vibrations which take rise in railway traffic. Incipient chapters cover the basis of theory of vibration as well as describe elements presented in railway superstructure, that have a significant influence on the occurence and propagation of vibration. Thereafter the wheel-rail contact and different types of vibrational sources, due to rail and wheel irregularities, are described in greater detail. Procedure implementation of vibration measurement as well as effects of train-induced vibration are also briefly discussed. Major portion of contents is focused on mitigating measures, with a great emphasis on under-sleeper pads. Based on the simple dynamic model of a train-track system, displacements, velocities and accelerations, which represent approximate values of oscillations, that can be anticipated in such system, are calculated in the end. Model is designed as a single degree-of-freedom system and represents movement of a damped mass element with constant speed on a sine curved grounding. Based on the results, that are graphically represented in diagrams, one can conclude, how the values of oscillations are dependant on geometrical parameters of rail corrugations, speed of train and mass of a carriage.
Ključne besede (ePrints, sekundarni jezik):	railway traffic;oscillations;vibrations;rail corrugation;vibration mitigation;under sleeper pads
ID:	8313095